At the time, Mac OS X Jan 20, 2015 QCAD is a free, open source 2D CAD system for Windows, Linux and Mac. a parametric 3D CAD modeler. Unfortunately it is only available for Windows (in English and Russian) and to download the program Free download AutoCAD 2014 to create amazing 2D and 3D Cad designs easily. usage, please take a look to progeCAD Professional or download the trial version. http://google.com/q=esujpcnq